Simple printf and restore assert stuff

inc/stdlib.h

@@ -52,6 +52,9 @@ long int strtol(const char *restrict nptr, char **restrict endptr, int base);
 long long int strtoll(const char *restrict nptr, char **restrict endptr, int base);
 unsigned long int strtoul(const char *restrict nptr, char **restrict endptr, int base);
 unsigned long long int strtoull(const char *restrict nptr, char **restrict endptr, int base);
+
+char *itoa(int value, char *str, int base);
+
 int rand(void);
 void srand(unsigned int seed);
 
@@ -63,6 +66,7 @@ void free(void *ptr);
 void *malloc(size_t size);
 void *realloc(void *ptr, size_t size);
 
+
 _Noreturn void abort(void);
 int atexit(void (*func)(void));
 // int at_quick_exit(void (*func)(void));

src/code/fmt/gen_fmt.c

@@ -0,0 +1,43 @@
+
+#include <stdarg.h>
+
+#define ctype     char
+#define pfx(f) f
+#include "gen_fmt.h"
+#undef  ctype
+#undef  pfx
+
+#define ctype     wchar_t
+#define pfx(f) w ## f
+#include "gen_fmt.h"
+#undef  ctype
+#undef  pfx
+
+static int fprintfcb(void *ctx, char ch) {
+    FILE *f = ctx;
+    return fputc(ch, f) != EOF;
+}
+
+int vfprintf(FILE *stream, const char *fmt, va_list args) {
+    return vprintfcb(stream, fprintfcb, fmt, args);
+}
+
+int vprintf(const char *fmt, va_list args) {
+    return vprintfcb(stdout, fprintfcb, fmt, args);
+}
+
+int fprintf(FILE *stream, const char *fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+    int len = vfprintf(stream, fmt, args);
+    va_end(args);
+    return len;
+}
+
+int printf(const char *fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+    int len = vprintf(fmt, args);
+    va_end(args);
+    return len;
+}

src/code/fmt/gen_fmt.h

@@ -0,0 +1,54 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef int (pfx(cbfn))(void *ctx, ctype ch);
+
+static int pfx(vprintfcb)(
+    void *ctx,
+    cbfn *cb,
+    const ctype *fmt,
+    va_list args
+) {
+    int w = 0;
+    while(*fmt) {
+        while(*fmt && *fmt != '%') {
+            if(!cb(ctx, *fmt))
+                goto end;
+            ++w;
+            ++fmt;
+        }
+        if(*fmt == '%') {
+            ++fmt;
+            char f = *fmt++;
+            switch(f) {
+                case 's': {
+                    char *str = va_arg(args, char *);
+                    while(*str) {
+                        if(!cb(ctx, *str))
+                            goto end;
+                        ++str;
+                        ++w;
+                    }
+                } break;
+                case 'd': case 'i': {
+                    int num = va_arg(args, int);
+                    char buffer[20];
+                    char *str = buffer;
+                    itoa(num, buffer, 10);
+                    while(*str) {
+                        if(!cb(ctx, *str))
+                            goto end;
+                        ++str;
+                        ++w;
+                    }
+                } break;
+            }
+        }
+    }
+    goto end;
+print_str:
+    
+end:
+    return w;
+}

src/code/math/gen_math.c

@@ -4,7 +4,7 @@
 #include <errno.h>
 #include <stdint.h>
 
-#define ln2 0.69314718055994530941723212145817
+static double LN2       = 0.693147180559945309417232121458176;
 static double HALF_PI   = 1.570796326794896619231321691639751;
 static double PI        = 3.141592653589793238462643383279502;
 static double LOG2E     = 1.442695040888963407359924681001892;
@@ -14,20 +14,20 @@ static double LOG2E     = 1.442695040888963407359924681001892;
 #define ftype float
 #define suffix(name) name ## f
 #include "cordic/cordic_dataf.c"
-#include "generic.h"
+#include "gen_math.h"
 #undef ftype
 #undef suffix
 
 #define ftype double
 #define suffix(name) name
 #include "cordic/cordic_data.c"
-#include "generic.h"
+#include "gen_math.h"
 #undef ftype
 #undef suffix
 
 #define ftype long double
 #define suffix(name) name ## l
 #include "cordic/cordic_datal.c"
-#include "generic.h"
+#include "gen_math.h"
 #undef ftype
 #undef suffix

src/code/math/gen_math.h

@@ -221,7 +221,7 @@ ftype suffix(asin)(ftype x) {
 // }
 
 ftype suffix(exp2)(ftype x) {
-    return suffix(exp)(x * ln2);
+    return suffix(exp)(x * LN2);
 }
 
 ftype suffix(expm1)(ftype x) {

src/code/stdlib/conversion.c

@@ -5,9 +5,7 @@
 #include <limits.h>
 #include <errno.h>
 #include <math.h>
-
-// TODO: strto*: locale-based parsing
-// TODO: correctly rounded base 16 floats parsing
+#include <string.h>
 
 // Call me weak if you want but I'm actually too lazy to type
 // them out every time, also they take up a lot of horiz space.
@@ -339,3 +337,22 @@ float strtof(const char *restrict nptr, char **restrict endptr) {
 long double strtold(const char *restrict nptr, char **restrict endptr) {
     return (long double)strtod_generic(nptr, endptr);
 }
+
+char *itoa(int value, char *str, int base) {
+    int sign = 0;
+    if(value < 0) {
+        sign = 1;
+        value = -value;
+    }
+    char buf[20] = {0};
+    char *bufp = buf + sizeof buf - 1;
+    do {
+        *--bufp = value%base+'0';
+        value /= base;
+    } while(value != 0);
+    if(sign) {
+        *--bufp = '-';
+    }
+    strcpy(str, bufp);
+    return str;
+}

src/win/win.h

@@ -7,6 +7,7 @@
 #include <shellapi.h>
 #include <DbgHelp.h>
 
+void _print_stack_trace();
 void _setup_timer(void);
 void _setup_eh();
 void _setup_heap();

src/win/win_assert.c

@@ -2,7 +2,7 @@
 #include <assert.h>
 
 #include <win.h>
-//#include <stdio.h>  // printf
+#include <stdio.h>  // printf
 #include <stdlib.h> // abort
 
 void _Noreturn _assert(
@@ -11,11 +11,11 @@ void _Noreturn _assert(
     char const *file,
     int line
 ) {
-    // printf("Assertion failed: %s\n", cond);
-    // printf("  Function: %s\n", func);
-    // printf("  File: %s\n", file);
-    // printf("  Line: %d\n", line);
-    // printf("Trace:\n");
-    // _os_print_stack_trace();
+    printf("Assertion failed: %s\n", cond);
+    printf("  Function: %s\n", func);
+    printf("  File: %s\n", file);
+    printf("  Line: %d\n", line);
+    printf("Trace:\n");
+    _print_stack_trace();
     abort();
 }

src/win/win_stack_trace.c

@@ -1,8 +1,9 @@
 
 #include <win.h>
 #include <stdlib.h>
+#include <stdio.h>
 
-void _os_print_stack_trace() {
+void _print_stack_trace() {
     HANDLE process = GetCurrentProcess();
     SymInitialize(process, NULL, TRUE);
 
@@ -14,13 +15,14 @@ void _os_print_stack_trace() {
     symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
     for(size_t i = 0; i < frames; i++) {
         SymFromAddr(process, (DWORD64)stack[i], 0, symbol);
-        if(strcmp(symbol->Name, "BaseThreadInitThunk") == 0) break;
-        if(strcmp(symbol->Name, "mainCRTStartup") == 0)      break;
-        // printf("  %u: 0x%"PRIx64" (%s)\n",
-        //     (int)(frames-i-1),
+        // if(strcmp(symbol->Name, "BaseThreadInitThunk") == 0) break;
+        // if(strcmp(symbol->Name, "mainCRTStartup") == 0)      break;
+        printf(//"  %u: 0x%"PRIx64" (%s)\n",
+            "  %d: %s\n",
+            (int)(frames-i-1),
             //symbol->Address,
-        //     symbol->Name
-        // );
+            symbol->Name
+        );
     }
     free(symbol);
 }

test/test_io.c

@@ -1,8 +1,8 @@
 
 #include <stdio.h>
+#include <stdlib.h>
 
 int main() {
-    for(int i = 0; i != 512; ++i)
-        fputc('Z', stdout);
+    printf("Hello, %i World!\n", __LINE__);
     return 0;
 }

todo

@@ -37,6 +37,7 @@ stdlib.h:
     qsort
     Better PRNG
     MB_CUR_MAX should be locale-dependent
+    strtod base 16 should be correctly rounded
     Probably other stuff
 
 threads.h: